831.md

Masking Personal Information

Description

link

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Solution

• See Code

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Code

O(n)

class Solution:
    def maskPII(self, S: str) -> str:
        at = S.find('@')
        if at >= 0:
            return (S[0] + "*" * 5 + S[at - 1:]).lower()
        S = "".join(i for i in S if i.isdigit())
        return ["", "+*-", "+**-", "+***-"][len(S) - 10] + "***-***-" + S[-4:]